LTE Model Atmospheres: MARCS, ATLAS and CO5BOLD

In this talk, we review the basic assumptions and physics covered by classical 1D LTE model atmospheres. We will focus on ATLAS and MARCS models of F-G-K stars and describe what resources are available through the web, both in terms of codes and model-atmosphere grids. We describe the advances made in hydrodynamical simulations of convective stellar atmospheres with the CO⁵BOLD code and what grids and resources are available, with a prospect of what will be available in the near future.